fix env variables for travis

.travis.yml

@@ -7,11 +7,6 @@ addons:
 services:
   - postgresql
 env:
-  - DATABASE_ENGINE=django.db.backends.postgresql_psycopg2
-  - DATABASE_NAME=postgres
-  - DATABASE_USER=postgres
-  - DATABASE_PASSWORD=
-  - DATABASE_HOST=localhost
-  - DATABASE_PORT=5432
+  - DATABASE_ENGINE=django.db.backends.postgresql_psycopg2 DATABASE_NAME=postgres DATABASE_USER=postgres DATABASE_PASSWORD= DATABASE_HOST=localhost DATABASE_PORT=5432
 install: pip install -r requirements.txt
 script: python manage.py test